Circulating head



W. A. TROUT CIRCULATING HEAD Filed Oct. 15. 1923 April 19, 1927.

' INVENTOR ATTORNEYS ject the provision'of circulating-head which a is capable of withstanding great pressure Openings Patented A 19, 1927.

UNITED STATES PATENT OFFICE.

cmcunarnre Thisinvent ion relates to circulating heads.

and particularly to a circulating head that is advantageous when'itis desired to cement oil wellcasing or'itubin gi Ther'invention lends itself to various adaptations other than the, cementing process} and has for its Obwithout leakage and still render access with in the circulating head an easy matter.

With the present type of circulating head through which neat cement is forced, the back pressure sometimes is so great as to cause leakage through such head, and the present invention is so formed with its parts so inter-related that all discharge or leakage through the head is overcome.

, Inpracticing the invention a body adapted for attachment with casing with the said within which circulating pipes "qua-y be attached with one end zone of such body flanged and provided with a breech lock adapted to accommodate a breech lock cap. The cap is formed to. carry an annular.

gasket, one face of which may be inclined with such face adapted to cooperate with a beveled portion of the body. .When the cap is in position and locked to the body the inner surface of the annular gasket is substantially flush with the inner surface of the body member. Back pressure against the cap and the body will only tend to tightly wedge or expand the gasket against the beveled surface of the body and thus prevent leakage between the cap and the body. By I forming the body of asize correspon ing to the size of the casing and providing areadily detachable cap, it is possible to qnicklyremove the cover and insert the usual wooden plugs or wooden plug in the body, replace the cap, force cement within the casing through the circulating head until the casing is filled. remove the cap and place within the circulating head a second wooden plug and then continue the forcing process by water or other fluid and force the second plug downwardly, thus forcing the cement up around the outside of the casing and against the wall of the well hole. Upon removal of the cap the usual drilling tools may be inserted within casing to cut away the wooden plugs without removing the body.

With the above and other objects in View the invention consists in the novel and useful provision, formation, construction, as-

. casing adapted I may providebody formed with circulation,

Application filed October 15, 1923. Serial No. 668,696.

sociation andrelat-ive arrangementof parts, 7

members and features. all asshown in one embodiment 1n the accompanying drawing,

' described generally and finally pointed out in claim, 7'

In the drawing: Y

Figurel is a vertical sectional view ofthe improved circulating head with the varigus parts shown in cooperative position, and

-- .ivith a fragment or casing joined with the bodvof such circulating head; and

Figure 2 is a top plan view of the circulating head.

Referring with particularity to the drawing, the circulating head is designated as an entirety and in one embodiment by A, and

for jointure with said circulating head is designated by B. The circulating head includes a body member a and a' cap member I), which cap member is adapted to carry a seal or gasket 0. The body member a may be internally threaded as shown at 1 wherebv the casing B maybe joined therewith. Said body member is likewise provided with transverse taper threaded openings 2 and 3 adapted to have screwed therein circulation pipes 4 and 5. The body a is annular in formation and an end portion thereof is inclined upwardly and outwardly as shown at 6 from a surface 7 of such body, and said body has one end terminating in a breech lock 8, which consists in providing a series of segmental spaced flanges 9, forming a part of the wall 10. It will be notedupon reference to Figure 1 that av ledge 11 is included between the inner surface of the wall 10 and the termination of the inclined or beveled wall 6. The cap 6 includes a dome portion 12 terminating in an annular flange 13. the said flange being provid d with a series of spaced segments 14. It is to be noted thatthe segments 14, as well as a. portion of the annular flange 13 is adapted to rest upon the ledge 11 of the body, and that when the cap is properly turned the segments 14 of the cap will interlock with the segments 9 of the body, as shown both in Figures 1 and 2 at 15. The annular flange 13 of the cap is provided with an annular recess, as shown at 16 within which is accommodated in part the seal or gasket c. which seal or gasket may be substantially righttriangular in cross section, with its inner annular surface as 17 forming one leg and hypotenuse or inclined surface 18 adapted eled or inclined some 6 oil the body. the base oil such seal, us shown at 19 is titted Within the nnnuler groove it; of the ou 'llhe cop rosy he provided With handles 20 end likewise provided With o screw-threaded bore 21 adapted to receive a pipe 22 tor the relieving" oil pressure Within the circulating head.

lln actual use of the device, neat cement may be forced through the pipes t and 5 into the body or, and it is ussuined that u wooden plug or other member has been in sorted Within the body a, through its top openine" with the cup l) replaced upon the body' and locked, the forcing o'l cement through the pipes at and 5 Will toroe the plug downwardly Within the casing B. When the casing has been filled to the desired point with cement, the cup Z) inuy be detached from the body, asecond pluginserted Within the body and then mud or water or other tluid may be forced through the pipes at and 5 to terse the plug downrvnrdiy upon the cement in the oasingE. ltnv batch pressure will Wedge the soul or guslret c aguinst the inclined or beveled tome ot' the body and thus 7 prevent tiny leuhuge between the cup and the body. Furthermore, the particular torinetron ot the cup having the breech loelr por trons coopereting with the loelr porneenrrn it is obvious that various changes and liflOfllfiCdlllOIlS may be made in practicing the invention, 1n departure from the particular showing of the drsvving, Without in any manner deperting from invention.

Having thus disclosed my invention, 1 eluiin end desire to secure by Letters Patent:

it circulating heed adapted for association with Well easing, suid circulating head including a, body and a. cup therefor, said circuluting head being substantially annular in term With the inner surface portion of the heed beveled in part, a triangular Wedgeshatped flexible member carried by said cap and having one of its sides beveled to cooperate with suid beveled portion on said head", end its other side extending in a substuntielly parallel plane with said body, said esp being formed with an inwardly tapered groove for holding and locking seid flexible member inoperetive position.

lin testimony whereof, I have signed my name.

the true spirit of the en 4 lepton; A; Trio, 

